Changes occurred in china geographically as result of sun yat sen 1911?

The Chinese Revolution of 1911, also known as the Xinhai Revolution, ended the Qing Dynasty, formed the Republic of China and sparked a lengthy period of ideological and political struggle. Sun Yat-sen, the revolution's leader, was pronounced the first provisional president of the new republic on December 29, 1911 and a new flag, referred to as the Five Races Under One Union flag, was adopted as the emblem of the nation. The last Chinese Emperor, Xuantong Puyi, officially abdicated on February 12, 1912, signaling the beginning of the Chinese Republican Era and the end of 4,000 years of Imperial rule